Perhaps split(mydf, paste(mydf$month,mydf$day))
-- Don MacQueen Lawrence Livermore National Laboratory 7000 East Ave., L-627 Livermore, CA 94550 925-423-1062 On 1/14/13 5:57 AM, "condor" <radonniko...@hotmail.nl> wrote: >I have a very dataset which I want to put in new dataframes according to >date. Example: >Suppose I have > > number day month hours >1 1 14 10 2 >2 2 14 10 12 >3 3 14 10 18 >4 4 15 10 3 >5 5 15 10 14 >6 6 16 10 18 >7 7 16 10 20 >8 8 16 10 23 >9 9 20 10 1 >10 10 21 10 14 >11 11 21 10 15 > >Now I want to get 5 new data frames, with first one > number day month hours >1 1 14 10 2 >2 2 14 10 12 >3 3 14 10 18 > >etc. > >Is there an efficient way to do this? Thanks for the help > > > >-- >View this message in context: >http://r.789695.n4.nabble.com/putting-data-frame-values-in-new-dataframes- >tp4655474.html >Sent from the R help mailing list archive at Nabble.com. > >______________________________________________ >R-help@r-project.org mailing list >https://stat.ethz.ch/mailman/listinfo/r-help >PLEASE do read the posting guide >http://www.R-project.org/posting-guide.html >and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.